Bob Sull wrote:

I've been in this for almost 30 years and this is the first I have
heard ofthe "golden Section" too. The "Rule of Thirds" has been
around longer than I have.....

This seems to be a cultural thing. I've discussed this in a danish
photo newsgroup and I got the exact opposite reaction: Veteran
photographers that say that they've "always" known about the Golden
Section, but only recently learned about the Rule of Thirds.